Do we know the the spell effect for sure? It´s never seen. And we shouuldn´t assume something based purely on ethymology. Nothing suggests hat it grows extra heads. This may be an entirely different spell.--Rodolphus (talk) 20:53, December 22, 2015 (UTC)

It doesn't say directly that it makes them 'grow extra heads', that's just a possibility for Mutating a Skull; also, we base quite a few things purely from the Etymology. Another thing I'd like to add is it fits rather well(Another skullus spell; we can be sure it is 'skull') And the effects would be to Mutate the Skull(Why isn't this a curse though, it seems really harmful!)Keep your head! CorporealPatronus (talk) 21:25, April 21, 2016 (UTC)Patronus

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